Organic light emitting diode display device and driving method thereof

Abstract

An organic light emitting diode display device according to an embodiment includes pixels each configured with an organic light emitting diode and a driving switch used to control a current flowing through the organic light emitting diode. The organic light emitting diode display device compensates a deterioration property of the organic light emitting diode after properties of the driving switch is compensated. As such, the deterioration property of the organic light emitting diode can be maximally reflected to a sensing data. In accordance therewith, the deterioration property of the organic light emitting diode can be accurately compensated.

Description

[0001]The present application claims priority under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2014-0192089 filed on Dec. 29, 2014, which is hereby incorporated by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Disclosure[0003]The present application relates to an organic light emitting diode display device and a driving method thereof.[0004]2. Description of the Related Art[0005]Recently, a variety of flat panel display (FPD) devices adapted to reduce weight and volume corresponding to disadvantages of cathode ray tube (CRT) are being developed. The flat panel display devices include liquid crystal display (LCD) devices, field emission display (FED) devices, plasma display panels (PDPs), electroluminescence devices and so on.[0006]The PDPs have advantages such as simple structure, simple manufacture procedure, lightness and thinness, and are easy to provide a large-sized screen. In view of these points, the PDPs attract public attention. Howev...

AI Technical Summary

Benefits of technology

[0014]The embodiments are to provide an organic light emitting diode display device and a driving method which are adapted to accurately control a current flowing through an organic light emitting diode by detecting a threshold voltage of a driving transistor.

[0015]Also, the embodiments are to provide an organic light emitting diode display device and a driving method which are adapted to accurately sense an operation voltage of an organic light emitting diode by minimizing a mobility component of a driving transistor through a mobility compensation of the driving switch.

[0016]Moreover, the embodiments are to provide an organic light emitting diode display device and a driving method which are adapted to reduce the number of memories by sensing an operation voltage of an organic light emitting diode using a pixel structure, which is suitable to internally compensate for mobility of a driving switch, and removing a separated memory which is used to store a sensed mobility value of the driving switch.

[0017]Furthermore, the embodiments are to provide an organic light emitting diode display device and a driving method which are adapted to prevent the generation of any data communication error by receiving sensed data using internal clocks with different phases from each other.

Problems solved by technology

However, the PDPs have serious problems such as low light emission efficiency, low brightness and high power consumption.

However, the thin film transistor LCD devices have disadvantages such as a narrow viewing angle and a low response time, because of being non-luminous devices.

However, it is difficult to detect the deterioration degree of the organic light emitting diode.

Due to this, errors can be generated in the sensed data and the compensation data.

However, the delay control method cannot sense real-time data (or variations thereof) generated at a real (or normal) operation, not an initial setup operation.

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